diff --git a/1-js/04-object-basics/07-optional-chaining/article.md b/1-js/04-object-basics/07-optional-chaining/article.md
index 6f9f01cf..e66d86ac 100644
--- a/1-js/04-object-basics/07-optional-chaining/article.md
+++ b/1-js/04-object-basics/07-optional-chaining/article.md
@@ -21,7 +21,7 @@ let user = {}; // a user without "address" property
 alert(user.address.street); // Error!
 ```
 
-That's the expected result. JavaScript works like this. As `user.address` is `undefined`, an attempt to get `user.address.street` fails with an error. 
+That's the expected result. JavaScript works like this. As `user.address` is `undefined`, an attempt to get `user.address.street` fails with an error.
 
 In many practical cases we'd prefer to get `undefined` instead of an error here (meaning "no street").